What is the maximum size of std::ostringstream buffer?

Question

Is the size allotted based on amount of dynamically allotted memory available? what happens when we reach this limit is there an exception thrown or it overwrites to some other

Answer 1

The buffer of a std::stringstream object is a wrapper around a std::string object. As such, the maximum size is std::string::max_size(). When the stream cannot allocate further, an exception will be thrown by the buffer which is probagated to the stream. The response is to turn on std::ios_base::badit in its stream state. Attempting to write pass this point will do nothing unless the stream state is cleared and the buffer is at least partially emptied.